instructions.md

In this exercise you're going to write some code to help you cook a brilliant lasagna from your favorite cooking book.

You have three tasks, all related to the time spent cooking the lasagna.

1. Calculate the preparation time in minutes

Define the preptime function that takes the number of layers you added to the lasagna as an argument and returns how many minutes you spent preparing the lasagna, assuming each layer takes you 2 minutes to prepare.

julia> preptime(4)
8

2. Calculate the remaining oven time in minutes

According to the cooking book, lasagna needs to be in the oven for a total of 60 minutes. Define the remaining_time function that takes the actual minutes the lasagna has been in the oven as a parameter and returns how many minutes the lasagna still has to remain in the oven.

julia> remaining_time(50)
10

3. Calculate the total working time in minutes

Define the total_working_time function that takes two arguments: the first argument is the number of layers you added to the lasagna, and the second parameter is the number of minutes the lasagna has been in the oven. The function should return how many minutes in total you've worked on cooking the lasagna, which is the sum of the preparation time in minutes, and the time in minutes the lasagna has spent in the oven at the moment.

julia> total_working_time(3, 20)
26